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Mastering Authselect on Fedora: Professional and Secure PAM Configuration Management

By admin May 19, 2026

Stop manual PAM editing! Learn how to use authselect on Fedora to securely manage system authentication, from SSSD configuration to handling faillock account lockouts.

Development

Building a Real-time Notification System with Node.js and Redis Pub/Sub: Rescuing the Database at 2 AM

By admin May 19, 2026

Is your notification system overwhelming your database? Learn how to build a robust real-time architecture with Node.js and Redis Pub/Sub for superior performance.

Monitoring

Prometheus Process Exporter Guide: Detailed Monitoring of Linux Process Health

By admin May 19, 2026

A detailed guide on installing Prometheus Process Exporter to monitor CPU, RAM, and I/O of individual Linux processes, helping you pinpoint the exact cause of system overloads.

Development

Mastering Load Testing with k6: From Simple Scripts to CI/CD Automation

By admin May 19, 2026

A professional guide to REST API performance testing with k6. Sharing practical insights on stages, thresholds, and CI/CD integration to keep systems stable under heavy load.

Security

SBOM: The “X-Ray” for Dependency Analysis and Vulnerability Scanning with Syft & Grype

By admin May 19, 2026

Learn how to use Syft and Grype for dependency analysis and automated vulnerability scanning. Secure your software supply chain with SBOM – a modern security standard for SREs and DevSecOps.

MySQL

Professional Database Monitoring with MySQL Audit Log Plugin

By admin May 19, 2026

A detailed guide on installing and optimizing the Percona MySQL Audit Log Plugin. This solution tracks all user actions, protects sensitive data, and meets security standards for production systems.

Fedora

Seamlessly Replacing Fedora Packages with dnf swap and dnf shell

By admin May 19, 2026

Learn how to use dnf swap and dnf shell to replace packages, switch from MariaDB to MySQL, or install full FFmpeg on Fedora without dependency conflicts.

Database

PostgreSQL Full-Text Search: High-Performance Vietnamese Search Without Elasticsearch

By admin May 19, 2026

Don't rush to install Elasticsearch! A detailed guide on building high-speed, accurate Vietnamese search directly in PostgreSQL using only tsvector and GIN Index.

Linux

Mastering chroot on Linux: From Sandbox Isolation to Real-World System Rescue

By admin May 18, 2026

Discover how to use chroot for application isolation and Linux boot rescue. A practical guide to mastering your system without the need for complex Docker or VM setups.

Security

Hunting Security Vulnerabilities with Semgrep: Fast, Accurate, and Extremely Easy Rule Writing

By admin May 18, 2026

Learn how to use Semgrep for automated source code analysis, quickly detect security vulnerabilities, and effectively integrate into CI/CD workflows for developers.

Optimizing Proxmox: How to Create a ‘Gold Standard’ LXC Template for Mass Deployment in 30 Seconds

Optimizing PHP 8.3 on Ubuntu 24.04: Don’t Let Your Server Run Like a Snail

Mastering Python functools: Writing Better, Faster Code

Fixing SELinux Errors on Fedora for Good: Use setroubleshoot and audit2allow Instead of Disabling It

Build Your Own High-Performance, Low-Cost Git Server with Gitea on Fedora: Maximum Security with SELinux

Configuring Multi-WAN Failover on Linux: A “Never-Down” Internet Solution with Keepalived

Podman Auto-update on Fedora: Automating Containers the Native Way

Installing MinIO on CentOS Stream 9: Build Your Own S3 Storage with SELinux and Firewalld

Installing Grafana on CentOS Stream 9: Professional Server Monitoring with Prometheus

SSH Bastion Host (Jump Server) Configuration Guide: A Secure Gateway for Linux Systems

Mastering Authselect on Fedora: Professional and Secure PAM Configuration Management

Building a Real-time Notification System with Node.js and Redis Pub/Sub: Rescuing the Database at 2 AM

Prometheus Process Exporter Guide: Detailed Monitoring of Linux Process Health

Mastering Load Testing with k6: From Simple Scripts to CI/CD Automation

SBOM: The “X-Ray” for Dependency Analysis and Vulnerability Scanning with Syft & Grype

Professional Database Monitoring with MySQL Audit Log Plugin

Seamlessly Replacing Fedora Packages with dnf swap and dnf shell

PostgreSQL Full-Text Search: High-Performance Vietnamese Search Without Elasticsearch

Mastering chroot on Linux: From Sandbox Isolation to Real-World System Rescue

Hunting Security Vulnerabilities with Semgrep: Fast, Accurate, and Extremely Easy Rule Writing